/*
 * Copyright (c) 1987, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)getopt.c	8.3 (Berkeley) 4/27/95";
#endif /* LIBC_SCCS and not lint
#include <sys/cdefs.h>
//__FBSDID("$FreeBSD: src/lib/libc/stdlib/getopt.c,v 1.6 2002/03/29 22:43:42 markm Exp $");

#include "namespace.h"*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*#include "un-namespace.h"*/

/*#include "libc_private.h"*/

int opterr = 1, /* if error message should be printed */
  optind = 1,   /* index into parent argv vector */
  optopt,       /* character checked for validity */
  optreset;     /* reset getopt */
char * optarg;  /* argument associated with option */

#define BADCH (int)'?'
#define BADARG (int)':'
#define EMSG ""

/*
 * getopt --
 *	Parse argc/argv argument vector.
 */
int            getopt(nargc, nargv, ostr) int nargc;
char * const * nargv;
const char *   ostr;
{
  static char * place = EMSG; /* option letter processing */
  char *        oli;          /* option letter list index */

  if (optreset || !*place)
  { /* update scanning pointer */
    optreset = 0;
    if (optind >= nargc || *(place = nargv[optind]) != '-')
    {
      place = EMSG;
      return (-1);
    }
    if (place[1] && *++place == '-')
    { /* found "--" */
      ++optind;
      place = EMSG;
      return (-1);
    }
  } /* option letter okay? */
  if ((optopt = (int)*place++) == (int)':' || !(oli = strchr(ostr, optopt)))
  {
    /*
     * if the user didn't specify '-' as an option,
     * assume it means -1.
     */
    if (optopt == (int)'-')
      return (-1);
    if (!*place)
      ++optind;
    if (opterr && *ostr != ':' && optopt != BADCH)
      (void)fprintf(stderr, "%s: illegal option -- %c\n", "progname", optopt);
    return (BADCH);
  }
  if (*++oli != ':')
  { /* don't need argument */
    optarg = NULL;
    if (!*place)
      ++optind;
  }
  else
  {             /* need an argument */
    if (*place) /* no white space */
      optarg = place;
    else if (nargc <= ++optind)
    { /* no arg */
      place = EMSG;
      if (*ostr == ':')
        return (BADARG);
      if (opterr)
        (void)fprintf(stderr, "%s: option requires an argument -- %c\n", "progname", optopt);
      return (BADCH);
    }
    else /* white space */
      optarg = nargv[optind];
    place = EMSG;
    ++optind;
  }
  return (optopt); /* dump back option letter */
}
